TRF3750_16 Datasheet, PDF (1/38 Pages) Texas Instruments – HIGH-PERFORMANCE INTEGER-N PLL FREQUENCY SYNTHESIZER

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TRF3750
SLWS146B − MARCH 2004 − REVISED AUGUST 2007
HIGH-PERFORMANCE INTEGER-N PLL FREQUENCY SYNTHESIZER
FEATURES
D Single Device Covers Frequencies Up to
2.4 GHz
D Dual Supply Range: 3 V − 3.6 V and
4.5 V − 5.5 V
D Separate Charge Pump Supply (V_CP) Up
to 8 V
D Simple 3-Wire Serial Interface Allows for Fully
Programmable:
− A, B, and R Counters
− Dual Modulus Prescaler [8/9, 16/17, 32/33,
and 64/65]
− Charge Pump Current
D Lock Detect Output (Digital and Analog)
D Versatile Hardware and Software Power Down
D Packaged in a 16-Pin TSSOP Thin Quad
FlatPack and a 20-Pin 4 x 4 mm QFN Package
APPLICATIONS
D Wireless Infrastructure
− GSM, IS136, EDGE/UWC−136
− IS95, UMTS, CDMA2000
D Portable Wireless Communications
D Wireless LAN
D Wireless Transceivers
D Communication Test Equipment
DESCRIPTION
The TRF3750 frequency synthesizer is ideal for designing
the local os cillator portion of wireless transceivers by
providing complete programmability and ultra-low phase
noise. The device features a user-selectable dual-
modulus prescaler, a 14-bit reference (R) divider, a 6-bit A,
and a 13-bit B counter. The R divider allows the user to
select the frequency of choice for the phase-frequency
detector (PFD) circuit, and with the use of the counters
implement an N divider of value N = A + P x B. With an
extended charge-pump supply (V_CP) of up to 8 V, a wide
variety of external VCOs can be used to complete the
phase-locked loop. Ultra-low phase noise and reference
spur performance make the TRF3750 ideal for generating
the local oscillator in the most demanding wireless
applications.
PW PACKAGE
(TOP VIEW)
RSET
1
CPOUT
2
CPGND
3
AGND
4
RFIN
5
RFIN
6
AVDD
7
REFIN
8
16
VCP
15
DVDD
14
MUXOUT
13
LE
12
DATA
11
CLOCK
10
CE
9
DGND
RGP PACKAGE
(TOP VIEW)
CPGND
AGND
AGND
RFIN
RFIN
20 19 18 17 16
1
15
2
14
3
13
4
12
5
11
6 7 8 9 10
MUXOUT
LE
DATA
CLOCK
CE
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semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
Copyright © 2007, Texas Instruments Incorporated